Chinese scientists have successfully tested the YF-79 engine for the Long March 9 rocket, which will
What is known
New hydrogen-oxygen engine YF-79designed for installation in the third stage of a super-heavy rocket. The China Aerospace Science and Technology Corporation (CASC) announced the successful completion of three ground tests.
The YF-79 weighs 25,000 kg and features a cycle withphase transition (expander cycle). As we noted above, it is aimed at the third stage of the Long March 9 rocket. In total, Chinese specialists have developed four engines. The first and second stages will use four YF-130 oxygen-kerosene engines and two YF-90 hydrogen-oxygen engines, respectively.
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Long March 9 will be able to launch into low-Earth orbit140,000 kg payload. The rocket will also be used to deliver cargo to the Moon and Mars. The maximum weight will be 50,000 kg and 44,000 kg, respectively.